/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/GameplayEffectTypes.h
Update the specified tag by the specified delta, potentially causing an additional or removal from the explicit tag list. Calling code MUST call FillParentTags followed by executing the returned delegates.
True if tag waseitheradded or removed. (E.g., we had the tag and now dont. or didnt have the tag and now we do. We didn't just change the count (1 count -> 2 count would return false).
bool UpdateTagCount_DeferredParentRemoval ( const [FGameplayTag](API\Runtime\GameplayTags\FGameplayTag) & Tag, int32 CountDelta, [TArray](API\Runtime\Core\Containers\TArray)< [FDeferredTagChangeDelegate](API\Plugins\GameplayAbilities\FDeferredTagChangeDelegate) > & DeferredTagChangeDelegates )